[hibernate-issues] [Hibernate-JIRA] Issue Comment Edited: (JPA-4) PersistenceUtil.isLoaded() fails with a ClassCastException in Websphere 7
Mike Youngstrom (JIRA)
noreply at atlassian.com
Tue Feb 21 20:59:09 EST 2012
[ https://hibernate.onjira.com/browse/JPA-4?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=45551#comment-45551 ]
Mike Youngstrom edited comment on JPA-4 at 2/21/12 7:58 PM:
------------------------------------------------------------
You can work around the issue by implementing your own PersistenceProviderResolver that only resolves Hibernate like this:
{code}
public class HibernatePersistenceProviderResolver implements PersistenceProviderResolver {
private static final Logger LOGGER = Logger.getLogger(HibernatePersistenceProviderResolver.class.getName());
private volatile PersistenceProvider persistenceProvider = new HibernatePersistence();
@Override
public List<PersistenceProvider> getPersistenceProviders() {
return Collections.singletonList(persistenceProvider);
}
@Override
public void clearCachedProviders() {
persistenceProvider = new HibernatePersistence();
}
public static void register() {
LOGGER.info("Registering HibernatePersistenceProviderResolver");
PersistenceProviderResolverHolder.setPersistenceProviderResolver(new HibernatePersistenceProviderResolver());
}
}
{code}
Then be sure to invoke "register" before you try to use Hibernate JPA. This can be accomplished with a servlet container listener or something that runs before anything that may use JPA.
was (Author: youngm):
You can work around the issue by implementing your own PersistenceProviderResolver that only resolves Hibernate like this:
public class HibernatePersistenceProviderResolver implements PersistenceProviderResolver {
private static final Logger LOGGER = Logger.getLogger(HibernatePersistenceProviderResolver.class.getName());
private volatile PersistenceProvider persistenceProvider = new HibernatePersistence();
@Override
public List<PersistenceProvider> getPersistenceProviders() {
return Collections.singletonList(persistenceProvider);
}
@Override
public void clearCachedProviders() {
persistenceProvider = new HibernatePersistence();
}
public static void register() {
LOGGER.info("Registering HibernatePersistenceProviderResolver");
PersistenceProviderResolverHolder.setPersistenceProviderResolver(new HibernatePersistenceProviderResolver());
}
}
Then be sure to invoke "register" before you try to use Hibernate JPA. This can be accomplished with a servlet container listener or something that runs before anything that may use JPA.
> PersistenceUtil.isLoaded() fails with a ClassCastException in Websphere 7
> -------------------------------------------------------------------------
>
> Key: JPA-4
> URL: https://hibernate.onjira.com/browse/JPA-4
> Project: Java Persistence API
> Issue Type: Bug
> Affects Versions: 1.0.0
> Environment: Websphere 7 Hibernate 3.5
> Reporter: Mike Youngstrom
>
> To duplicate deploy a .war with hibernate 3.5 to Websphere with the contextlistener below. You need to set the classloader to "parent last" so that your application will use Hibernate's JPA 2 API instead of Webspheres JPA 1 API.
> package test;
> import javax.persistence.Persistence;
> import javax.servlet.ServletContextEvent;
> import javax.servlet.ServletContextListener;
> public class TestListener implements ServletContextListener {
> @Override
> public void contextDestroyed(ServletContextEvent arg0) {
> }
> @Override
> public void contextInitialized(ServletContextEvent arg0) {
> System.out.println("Result of isLoaded: "+Persistence.getPersistenceUtil().isLoaded(new Object()));
> }
> }
> Throws the exception below.
> It appears the problem is that PersistenceProviderResolverHolder.PersistenceProviderResolverPerClassLoader scans all of the classloader levels to find PersistenceProviders. This is finding Websphere's OpenJPA provider in a different classloader than the application and hence with a different JPA API. Although this example happens in Websphere 7 it would in theory also happen anytime Websphere is used in an app server with another JPA implementation that cannot be removed from the server.
> java.lang.ClassCastException: com.ibm.websphere.persistence.PersistenceProviderImpl incompatible with javax.persistence.spi.PersistenceProvider
> at javax.persistence.Persistence$1.isLoaded(Persistence.java:92)
> at test.TestListener.contextInitialized(TestListener.java:20)
> at com.ibm.ws.webcontainer.webapp.WebApp.notifyServletContextCreated(WebApp.java:1681)
> at com.ibm.ws.webcontainer.webapp.WebApp.commonInitializationFinish(WebApp.java:374)
> at com.ibm.ws.webcontainer.webapp.WebAppImpl.initialize(WebAppImpl.java:299)
> at com.ibm.ws.webcontainer.webapp.WebGroupImpl.addWebApplication(WebGroupImpl.java:100)
> at com.ibm.ws.webcontainer.VirtualHostImpl.addWebApplication(VirtualHostImpl.java:166)
> at com.ibm.ws.webcontainer.WSWebContainer.addWebApp(WSWebContainer.java:731)
> at com.ibm.ws.webcontainer.WSWebContainer.addWebApplication(WSWebContainer.java:616)
> at com.ibm.ws.webcontainer.component.WebContainerImpl.install(WebContainerImpl.java:376)
> at com.ibm.ws.webcontainer.component.WebContainerImpl.start(WebContainerImpl.java:668)
> at com.ibm.ws.runtime.component.ApplicationMgrImpl.start(ApplicationMgrImpl.java:1122)
> at com.ibm.ws.runtime.component.DeployedApplicationImpl.fireDeployedObjectStart(DeployedApplicationImpl.java:1315)
> at com.ibm.ws.runtime.component.DeployedModuleImpl.start(DeployedModuleImpl.java:623)
> at com.ibm.ws.runtime.component.DeployedApplicationImpl.start(DeployedApplicationImpl.java:940)
> at com.ibm.ws.runtime.component.ApplicationMgrImpl.startApplication(ApplicationMgrImpl.java:725)
> at com.ibm.ws.runtime.component.ApplicationMgrImpl$1.run(ApplicationMgrImpl.java:1266)
> at com.ibm.ws.security.auth.ContextManagerImpl.runAs(ContextManagerImpl.java:4509)
> at com.ibm.ws.security.auth.ContextManagerImpl.runAsSystem(ContextManagerImpl.java:4687)
> at com.ibm.ws.security.core.SecurityContext.runAsSystem(SecurityContext.java:255)
> at com.ibm.ws.runtime.component.ApplicationMgrImpl.startApplicationDynamically(ApplicationMgrImpl.java:1271)
> at com.ibm.ws.runtime.component.ApplicationMgrImpl.start(ApplicationMgrImpl.java:2043)
> at com.ibm.ws.runtime.component.CompositionUnitMgrImpl.start(CompositionUnitMgrImpl.java:439)
> at com.ibm.ws.runtime.component.CompositionUnitImpl.start(CompositionUnitImpl.java:123)
> at com.ibm.ws.runtime.component.CompositionUnitMgrImpl.start(CompositionUnitMgrImpl.java:382)
> at com.ibm.ws.runtime.component.CompositionUnitMgrImpl.startCompositionUnit(CompositionUnitMgrImpl.java:653)
> at com.ibm.ws.runtime.component.CompositionUnitMgrImpl.startCompositionUnit(CompositionUnitMgrImpl.java:615)
> at com.ibm.ws.runtime.component.ApplicationMgrImpl.startApplication(ApplicationMgrImpl.java:1177)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:48)
> at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:37)
> at java.lang.reflect.Method.invoke(Method.java:600)
> at sun.reflect.misc.Trampoline.invoke(MethodUtil.java:37)
> at sun.reflect.GeneratedMethodAccessor35.invoke(Unknown Source)
> at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:37)
> at java.lang.reflect.Method.invoke(Method.java:600)
> at sun.reflect.misc.MethodUtil.invoke(MethodUtil.java:244)
> at javax.management.modelmbean.RequiredModelMBean.invokeMethod(RequiredModelMBean.java:1086)
> at javax.management.modelmbean.RequiredModelMBean.invoke(RequiredModelMBean.java:967)
> at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:848)
> at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:773)
> at com.ibm.ws.management.AdminServiceImpl$1.run(AdminServiceImpl.java:1320)
> at com.ibm.ws.security.util.AccessController.doPrivileged(AccessController.java:118)
> at com.ibm.ws.management.AdminServiceImpl.invoke(AdminServiceImpl.java:1213)
> at com.ibm.ws.management.application.sync.StartDeploymentTask.startDeployment(StartDeploymentTask.java:236)
> at com.ibm.ws.management.application.sync.StartDeploymentTask.fullAppUpdate(StartDeploymentTask.java:113)
> at com.ibm.ws.management.application.sync.StartDeploymentTask.performTask(StartDeploymentTask.java:101)
> at com.ibm.ws.management.application.sync.AppBinaryProcessor$ExpandApp.expand(AppBinaryProcessor.java:1556)
> at com.ibm.ws.management.application.sync.AppBinaryProcessor.postProcessSynchronousExt(AppBinaryProcessor.java:654)
> at com.ibm.ws.management.bla.sync.BLABinaryProcessor.postProcess(BLABinaryProcessor.java:569)
> at com.ibm.ws.management.bla.sync.BLABinaryProcessor.onChangeCompletion(BLABinaryProcessor.java:451)
> at com.ibm.ws.management.repository.FileRepository.postNotify(FileRepository.java:1915)
> at com.ibm.ws.management.repository.FileRepository.update(FileRepository.java:1424)
> at com.ibm.ws.management.repository.client.LocalConfigRepositoryClient.update(LocalConfigRepositoryClient.java:189)
> at com.ibm.ws.sm.workspace.impl.WorkSpaceMasterRepositoryAdapter.update(WorkSpaceMasterRepositoryAdapter.java:655)
> at com.ibm.ws.sm.workspace.impl.RepositoryContextImpl.update(RepositoryContextImpl.java:1954)
> at com.ibm.ws.sm.workspace.impl.RepositoryContextImpl.synch(RepositoryContextImpl.java:1902)
> at com.ibm.ws.sm.workspace.impl.WorkSpaceImpl.synch(WorkSpaceImpl.java:511)
> at com.ibm.ws.management.configservice.ConfigServiceImpl.save(ConfigServiceImpl.java:703)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:48)
> at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:37)
> at java.lang.reflect.Method.invoke(Method.java:600)
> at sun.reflect.misc.Trampoline.invoke(MethodUtil.java:37)
> at sun.reflect.GeneratedMethodAccessor35.invoke(Unknown Source)
> at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:37)
> at java.lang.reflect.Method.invoke(Method.java:600)
> at sun.reflect.misc.MethodUtil.invoke(MethodUtil.java:244)
> at javax.management.modelmbean.RequiredModelMBean.invokeMethod(RequiredModelMBean.java:1086)
> at javax.management.modelmbean.RequiredModelMBean.invoke(RequiredModelMBean.java:967)
> at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:848)
> at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:773)
> at com.ibm.ws.management.AdminServiceImpl$1.run(AdminServiceImpl.java:1320)
> at com.ibm.ws.security.util.AccessController.doPrivileged(AccessController.java:118)
> at com.ibm.ws.management.AdminServiceImpl.invoke(AdminServiceImpl.java:1213)
> at com.ibm.ws.management.connector.AdminServiceDelegator.invoke(AdminServiceDelegator.java:181)
> at com.ibm.ws.management.connector.rmi.RMIConnectorService.invoke(RMIConnectorService.java:282)
> at com.ibm.ws.management.connector.rmi._RMIConnectorService_Tie.invoke(_RMIConnectorService_Tie.java:395)
> at com.ibm.ws.management.connector.rmi._RMIConnectorService_Tie._invoke(_RMIConnectorService_Tie.java:160)
> at com.ibm.CORBA.iiop.ServerDelegate.dispatchInvokeHandler(ServerDelegate.java:622)
> at com.ibm.CORBA.iiop.ServerDelegate.dispatch(ServerDelegate.java:475)
> at com.ibm.rmi.iiop.ORB.process(ORB.java:513)
> at com.ibm.CORBA.iiop.ORB.process(ORB.java:1574)
> at com.ibm.rmi.iiop.Connection.respondTo(Connection.java:2841)
> at com.ibm.rmi.iiop.Connection.doWork(Connection.java:2714)
> at com.ibm.rmi.iiop.WorkUnitImpl.doWork(WorkUnitImpl.java:63)
> at com.ibm.ejs.oa.pool.PooledThread.run(ThreadPool.java:118)
> at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1550)
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